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#1
11-15-2009, 10:40 AM
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Which size Serpentine Belt?
Hi,
which size I should choose if I buy an new Serpentine Belt? 1991 Buick Park Avenue L27 Series 1 3800L V6? On Rockauto I found 2 Size: 13/16" x 86 3/8" or 13/16" x 103" 
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#2
11-15-2009, 11:32 AM
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Re: Which size Serpentine Belt?
Good question. I have the same model as you and have been wondering which parts to get. My guess would be the 13/16" x 103" since it is a really long belt.
I also want to replace the tensioner pulley but they list several models for that as well.
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#3
11-15-2009, 12:30 PM
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Re: Which size Serpentine Belt?
Part No. 1025K6 or GATES Part # K061025 The shorter one would be for the supercharger, if you had one.
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#4
11-15-2009, 01:03 PM
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Re: Which size Serpentine Belt?
Thx, no I have the regular engine L27...
Its a cruiser 
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#5
11-15-2009, 03:54 PM
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Re: Which size Serpentine Belt?
I also want to replace they pulley.
On rockauto they list 2 sizes, 76x17x25mm and 82x17x25mm. I take it the 82mm is for the base model. However I want to get the Gates pulley, which is not listed at this size as a tensioner pulley, only as the idler pulley (which I don't have).... Are they the same or is Dayco a better brand?
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#6
11-15-2009, 04:03 PM
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Re: Which size Serpentine Belt?
Dayco is fine brand I think, I bought since 4 Years for diffrent cars the serpentine belt / Idler Pulley and all is fine.
The Idler Pulley are the same size so its the same which one u took... There are just on different about 1mm so its not important.
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